public class Circle1 {
	double radius,area;
	 Circle1(){
		radius=0;
	}
	Circle1(double r){
	 radius=r;
	}
	public double getRadius(){
		return radius;
	}
	public double getPerimeter(){
		return 2.0*Math.PI*radius;
	}
	public double gerArea(){
		return Math.PI*radius*radius;
	}
	void disp(){
		System.out.println(radius);
		System.out.println(getPerimeter());
		System.out.println(gerArea());
	}
}


